Means for packing leaks in pipes.



No. 683,024. Patented Sept. 24, [90L .1. nurm.

MEANS FOR PACKING LEAKS IN PIPES.

(Application filed Feb. 23, 1901.) (lo Iodol.)

UNirnD STATES PATENT Orrrcn.

JOSEPH DUNN, OF CHICAGO, ILLINOIS.

MEANS FOR PACKING IJEAKS IN PIPES.

SPECIFICATION forming part of Letters Patent. No. 683,024, datedSeptember 24, 1901.

Application filed February 23,1901. Serial No. 48,633. (No model.)

T0 at whom it may concern:

Be it known that I, JOSEPH DUNN, a citizen of the United States, and aresident of Ohicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Means for Packing Leaksin Pipes; and I do hereby declare that the following is a full, clear,and exact description thereof, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon, which form apart of this specification.

This invention relates to means for packing leaks in pipes, and moreparticularly to adjustable means designed to be secured on the pipe andacting to force into the leak a packing-ring of any desired material.

'Heretofore where pipes are connected in returns, elbows, Ts, or otherfittings it has been difficult should a leak occur to pack the jointWithout disconnecting the pipe and reuniting the same. This isfrequently inconvenient, if not impossible, owing to the service suchpipes must sustain.

The object of my invention is to provide cheap, simple, andreadily-operated means by which the leak may be quickly and surelystopped without repacking.

The invention consists of the matters hereinafter described, and morefully pointed out and defined in the appended claims.

In the drawings, Figure 1 is a side elevation of a device embodying myinvention, showing the same in use. Fig. 2 is a view showing the devicein longitudinal section. Fig.

-3 is a front elevation of the clamps. Fig. 4

is an elevation of the com pressin g-rin g. Fig. 5 is a detail of thesame.

In the drawings, A indicates a pipe of any desired size connected in anelbow a in a familiar manner.

B indicates a twopart annular metallic clamp hinged diametrically andprovided with a central aperture of a size sufficient to receive thepipe. Said hinge may be conveniently formed by providing lugs on theopposite sides of each half of said clamp, halving the same together,and passing a bolt or pin therethrough. 17 Z) indicate set-screws havingscrew-threaded engagement in and passing radially through said clamp inposition to engage a pipe on which said clamp is secured. As shown, fourof such set-screws are arranged about the periphery of said clamp atequal distances apart. is provided on its inner side with a rabbetconcentric with and opening into said central aperture, as indicated inFig. 2, and into which fits the end of the compressing-ring O, as shownin Figs. 1 and 2. The outer end of said compressing ring is providedwith a groove or rabbet concentric therewith adapted to receive thepacking-ring D and jam the same into the joint. I) 1) indicateset-screws having screw-threaded engagement in said clamp, parallel withthe axis of the aperture, the inner ends of which engage the inner endsof the compressing-ring G and act to force the parts thereoflongitudinallyof the pipe against and onto the packing-ring D. Said ring0 is constructed, as shown,in' four sections, hinged together by meansaffording longitudinal movement of each section thereof with respect tothe other, as shown in Fig. 5. This is secured by providing on themeeting ends of said sections complemental tenons and sockets, saidtenons, however, being materially narrower than the width of thesockets, so as to permit considerable end play in said hinges. Apivot-pin passes through the end of each section and the tenon therein,as shown in Figs. 4. and 5, and the edge of one or both of said meetingends is rounded over on the outer side to permit the sections to foldback one upon the other to permit the pipe to be received therein. Ifpreferred, two of said meeting ends may be provided with complementallugs c c, of which two, a c, are on one section and one, a, on theother, which passes between the lugs c c and is secured thereto by a pin0 which passes through the ends of said lugs.

The operation of my device is as follows: It being desired to close aleak at the point where the pipe A joins with the fitting a, thecompressible packing-ring D is placed in position on said pipe. Thecompressing-ring O is secured thereon, with the grooved or rabbeted endof the same in engagement with the compressible packing D. The clamp 13is next placed in position, with the rabbet or groove therein engagingthe end of the compressing-ring O, and is rigidly secured in saidposition by means of the set-screws b b,

Said clamp which are turned inwardly into positive engagement with thepipe. The set-screws b b are next set up in engagement with therespective section of the ring 0, thereby forcing the samelongitudinally on the pipe in the direction of the fitting a andcompressing the ring D into the joint, as indicated in Fig. 2, therebyeffectually closing the leak. A material advantage is gained byproviding suiticient longitudinal movement of each of the sections ofthe ring 0 with respect to the adjacent sections to prevent said ringbinding on the pipe through the pressure on the setscrews 12, it beingobvious that the ring as herein shown may be set up one section at atime to the desired extent and follow with the remaining sectionsWithout binding or jamming the pipe. Obviously should a leak occur inthe pipe at any other place than adjacent to the joint the same mayreadily be closed by using two of the clamps B, one on each side of thepacking-ring D, which should coverthe leak, and also one of thecompressing-rings O on each side of the same, whereupon the rings 0 maybe forced toward each other upon the packing-ring by means of saidclamps, thereby effectually closing the leak.

Obviously many details of construction may be varied without departingfrom the principle of my invention.

I claim as my invention- 1. In a device of the class described, thecombination with a packing-ring, of a compressing-ring engaging over thesame, said compressing-ring comprising a plurality of sections each ofwhich is longitudinallymovable with respect to the other and a clampadapted to be rigidly secured on the pipe to which the packing is to beapplied and acting to force the compressing-ring onto the packing-ring.

2. In a device of the class described, the combination with an annularpacking-ring, of a two-part clamp, radial set-screws thereon adapted topositively engage a pipe, a plurality of set-screws parallel to the axisof the clamp the inner ends of which extend Within an annular rabbet,compressing-rings comprising a plurality of sections each movablelongitudinally of the other and rabbeted at one end of the same toengage the packingring the other end of the same being adapted to engagein the rabbet of the clamp in position to be engaged by said set-screws.

3. In a s1ip-joint for pipes, a clamp adapted to be rigidly secured onthe pipe, an annular compressible packing-ring adapted to be secured onthe pipe at a leak, a compressingring composed of sections eachlongitudinally movable with respect to the others and having an endrecess to engage the packing-ring and a plurality of set-screws carriedon said clamp and acting to force the compressingring onto the packing.

In testimony whereof I have hereunto sub scribed my name in the presenceof two subscribing witnesses.

JOSEPH DUNN.

W'itnesses:

O. W. HILLS, LoUIs J. DELsoN.

